Preston S. Klassen

Preston S. Klassen, M.D., M.H.S. has served as a member of the board of directors since February 2014. Dr. Klassen has served as Senior Vice President and Head of Global Development at Orexigen Therapeutics, Inc., since 2009. He advanced from 2002 to 2009 through several medical director positions at Amgen, Inc., most recently as Therapeutic Area Head for Nephrology and Executive Medical Director. His experience at Amgen included global regulatory filings, design and conduct of large clinical trials, clinical commercialization of multiple products, and active leadership in regulatory agency interactions. Dr. Klassen was a faculty member in the Division of Nephrology at Duke University Medical Center from 1997 to 2002. He received his M.D. from the University of Nebraska College of Medicine and completed his residency in Internal Medicine, fellowship in Nephrology, and M.H.S. degree at Duke University. Dr. Klassen’s broad operational expertise in relevant therapeutic areas and leadership experience in the biotechnology industry contributed to the board of directors’ conclusion that he should serve as a director of the company.